I'm sorry for any confusion, but "Botswana" is a country located in Southern Africa, and it cannot be medically defined as it is not a medical term or concept. Botswana has a population of approximately 2.3 million people and is known for its wildlife reserves, such as the Chobe National Park and the Okavango Delta, which draw large numbers of tourists each year. The country has a high-income economy and is relatively stable politically. It is also known for having one of the highest rates of HIV infection in the world, although extensive efforts have been made to combat the disease.

I'm sorry for any confusion, but "Swaziland" is the former name of the country, which was officially changed to "Eswatini" in 2018. There seems to be a misunderstanding in your request as it combines two different concepts: a country name and a medical definition.

If you're looking for information about Eswatini (formerly Swaziland), here is a brief overview:

Eswatini is a small, landlocked country located in Southern Africa, bordered by Mozambique to the east and South Africa to the north, west, and south. It has a population of approximately 1.2 million people and is a constitutional monarchy, ruled by King Mswati III.

In terms of medical information, Eswatini faces several health challenges, including:

1. High HIV prevalence: Eswatini has one of the highest HIV prevalence rates globally, with an estimated 27% of adults (ages 15-49) living with HIV in 2020. The country has made significant progress in recent years to expand access to antiretroviral therapy (ART), which has contributed to a decline in AIDS-related deaths and new HIV infections.

2. Tuberculosis (TB): Due to the high prevalence of HIV, Eswatini also faces a significant burden of tuberculosis (TB). The country ranks 15th globally in terms of TB incidence, with an estimated 3,400 cases per 100,000 people in 2020.

3. Non-communicable diseases: As with many countries, Eswatini is experiencing a rise in non-communicable diseases (NCDs) such as cardiovascular disease, cancer, diabetes, and chronic respiratory diseases. These conditions are associated with lifestyle factors like unhealthy diets, physical inactivity, and tobacco use.

4. Maternal and child health: Eswatini has made progress in improving maternal and child health outcomes, but challenges remain. The country's maternal mortality ratio was estimated at 387 deaths per 100,000 live births in 2017, while the under-five mortality rate was 64 deaths per 1,000 live births in 2020.

5. Malnutrition: Micronutrient deficiencies and overweight/obesity are significant public health issues in Eswatini. According to the World Health Organization (WHO), an estimated 32% of children under five are stunted, while 14% are wasted. Additionally, 59% of women and 27% of men are overweight or obese.

I'm sorry for any confusion, but "Namibia" is not a medical term or concept. It is the name of a country located in southern Africa, known for its unique wildlife and diverse landscapes, including the Namib Desert, which is one of the oldest deserts in the world.

If you have any questions about medical terminology or concepts, I would be happy to help!

'Södra Afrika' är ett område som saknar en entydig och universellt accepterad medicinsk definition. I allmänhet avses dock ofta de södra delarna av afrikanska kontinenten, inklusive länder som Sydafrika, Botswana, Lesotho, Namibia, Swaziland och Zimbabwe. Ibland kan även Moçambique, Zambia, Malawi och Angola ingå i definitionen av 'Södra Afrika'.

I medicinsk kontext kan regionen vara av intresse på grund av specifika hälsoproblem som är vanliga eller endemiska där, såsom HIV/AIDS, tuberkulos, malaria och andra infektionssjukdomar. Det är viktigt att notera att hälsosituationen kan variera kraftigt mellan olika länder och områden inom 'Södra Afrika'.